:root {
    --primary-color: #00695c; 
    --primary-dark: #004d40;
    --header-blue: #005b96;
    --secondary-color: #FFC107;
    --light-gray: #f5f7fa;
    --medium-gray: #e0e0e0;
    --dark-gray: #455a64;
    --text-color: #263238;
    --white: #fff;
    --success-color: #2e7d32;
    --error-color: #c62828;
    --info-color: #0277bd;
    --shadow: 0 2px 5px rgba(0,0,0,0.05);
    --border-radius: 6px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background-color: var(--light-gray); color: var(--text-color); line-height: 1.5; display: flex; flex-direction: column; min-height: 100vh; }

header { background-color: var(--primary-color); color: var(--white); padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 2px 10px rgba(0,0,0,0.1); flex-wrap: wrap; }
header h1 { font-size: 1.4rem; margin-right: 2rem; font-weight: 600; }

#auth-container, #app-container { width: 100%; max-width: 1250px; margin: 2rem auto; padding: 0 1rem; }

.auth-form { background: var(--white); padding: 2.5rem; border-radius: var(--border-radius); box-shadow: var(--shadow); max-width: 450px; margin: 2rem auto; border-top: 4px solid var(--primary-color); }
.auth-form h2 { text-align: center; margin-bottom: 1.5rem; color: var(--primary-dark); }

#register-view { border-top-color: var(--secondary-color); } 

.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; margin-bottom: 0.4rem; font-weight: 600; font-size: 0.9rem; color: var(--dark-gray); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 0.65rem; border: 1px solid #cfd8dc; border-radius: 4px; font-size: 1rem; transition: border 0.2s; }
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--primary-color); }
.form-group input:disabled { background-color: #eee; color: #888; cursor: not-allowed; }
.form-row { display: flex; gap: 1rem; flex-wrap: wrap; }
.form-row .form-group { flex: 1; min-width: 150px; }

.btn { display: inline-block; padding: 0.6rem 1.2rem; font-size: 0.95rem; font-weight: 600; text-align: center; border: none; border-radius: 4px; cursor: pointer; transition: all 0.2s; width: 100%; }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { background-color: #ccc; cursor: not-allowed; }
.btn-primary { background-color: var(--primary-color); color: var(--white); } .btn-primary:hover:not(:disabled) { background-color: var(--primary-dark); }
.btn-secondary { background-color: var(--dark-gray); color: var(--white); } .btn-secondary:hover:not(:disabled) { background-color: #37474f; }
.btn-success { background-color: var(--success-color); color: var(--white); }
.btn-danger { background-color: var(--error-color); color: var(--white); }
.btn-info { background-color: var(--info-color); color: var(--white); }
.btn-warning { background-color: #ff9800; color: var(--white); }
.btn-small { padding: 0.3rem 0.7rem; font-size: 0.85rem; width: auto; }

.btn-export { background-color: #fff; border: 1px solid #ccc; color: #333; font-weight: 500; display: inline-flex; align-items: center; gap: 5px; padding: 0.4rem 0.8rem; }
.btn-export:hover { background-color: #f5f5f5; border-color: #bbb; }

.auth-link { text-align: center; margin-top: 1rem; } .auth-link a { color: var(--primary-color); text-decoration: none; font-weight: 600; }

nav { display: flex; gap: 0.2rem; align-items: center; flex-wrap: wrap; margin-top: 10px; }
nav a, nav button { color: rgba(255,255,255,0.9); text-decoration: none; background: none; border: none; cursor: pointer; font-size: 0.9rem; padding: 0.5rem 0.8rem; border-radius: 4px; transition: background-color 0.2s; font-weight: 500; }
nav a:hover, nav button:hover, nav a.active { background-color: rgba(255,255,255,0.15); color: #fff; }
#logout-button { background-color: rgba(0,0,0,0.2); margin-left: auto; }

main { flex: 1; }
.view { display: none; } .view.active { display: block; animation: fadeIn 0.4s; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }

.card { background: var(--white); padding: 1.5rem; border-radius: var(--border-radius); box-shadow: var(--shadow); margin-bottom: 1.5rem; border: 1px solid #eceff1; }

.dashboard-section-title { font-size: 1.1rem; color: var(--primary-color); font-weight: 700; margin: 1.5rem 0 1rem 0; padding-bottom: 0.5rem; border-bottom: 2px solid #e0f2f1; }

.kpi-card-modern { background: #fff; border: 1px solid #e0e0e0; border-left: 4px solid var(--primary-color); border-radius: 4px; padding: 1.2rem; display: flex; flex-direction: column; justify-content: space-between; height: 100%; transition: transform 0.2s, box-shadow 0.2s; }
.kpi-card-modern:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
.kpi-card-modern h3 { font-size: 0.85rem; color: #546e7a; margin-bottom: 0.5rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.kpi-card-modern .value { font-size: 1.8rem; font-weight: 700; color: var(--primary-dark); margin-bottom: 0.5rem; }
.kpi-card-modern .desc { font-size: 0.8rem; color: #78909c; line-height: 1.3; }

.kpi-green { border-left-color: var(--success-color); } .kpi-green .value { color: var(--success-color); }
.kpi-red { border-left-color: var(--error-color); } .kpi-red .value { color: var(--error-color); }
.kpi-blue { border-left-color: var(--info-color); } .kpi-blue .value { color: var(--info-color); }

.action-box { background-color: #fff; border: 1px solid #e0e0e0; border-radius: 4px; padding: 1.5rem; margin-bottom: 1rem; }
.action-title { font-weight: 700; color: var(--dark-gray); margin-bottom: 0.5rem; font-size: 1rem; display: flex; align-items: center; gap: 8px; }
.action-sug { font-size: 0.9rem; color: #546e7a; padding-left: 1rem; border-left: 3px solid #eceff1; margin-top: 0.5rem; }

.grid-container { display: grid; gap: 1.5rem; }
@media (min-width: 768px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(3, 1fr); } .grid-4 { grid-template-columns: repeat(4, 1fr); } }

table { width: 100%; border-collapse: collapse; margin-top: 1rem; font-size: 0.95rem; }
th, td { padding: 0.8rem; text-align: left; border-bottom: 1px solid #eceff1; }
th { background-color: #fafafa; font-weight: 600; color: var(--dark-gray); }
tr:hover { background-color: #f5f5f5; }
.actions-cell { text-align: right; white-space: nowrap; }
.actions-cell .btn { margin-left: 0.3rem; }

#ind-mensais-table thead tr th { background-color: var(--header-blue); color: #fff; border: 1px solid #004c7f; text-transform: uppercase; font-size: 0.85rem; }
#ind-mensais-table tbody tr td { border: 1px solid #e0e0e0; }
#ind-mensais-table tbody tr:nth-child(odd) { background-color: #fff; }
#ind-mensais-table tbody tr:nth-child(even) { background-color: #f9f9f9; }
.ind-val-blue { color: #0d47a1; font-weight: 700; }
.ind-val-white { background-color: var(--primary-color); color: white; padding: 2px 6px; border-radius: 4px; font-size: 0.9em;}

.total-cost { text-align: right; font-size: 1.3rem; font-weight: 700; margin-top: 1rem; color: var(--primary-dark); }
.stock-warning { color: var(--error-color); font-weight: bold; }
.stock-ok { color: var(--success-color); }
.checkbox-wrapper { display: flex; align-items: center; margin-bottom: 1rem; padding: 0.5rem; background: #e1f5fe; border-radius: 4px; color: #0277bd; }
.checkbox-wrapper input { width: auto; margin-right: 10px; cursor: pointer; transform: scale(1.2); }
.hidden { display: none; }

.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); padding: 1rem 2rem; border-radius: 30px; color: var(--white); z-index: 1000; opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s; box-shadow: 0 4px 12px rgba(0,0,0,0.15); font-weight: 500; }
.toast.show { opacity: 1; visibility: visible; }
.toast.success { background-color: var(--success-color); } .toast.error { background-color: var(--error-color); } .toast.info { background-color: var(--info-color); }

.modal { display: none; position: fixed; z-index: 100; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.5); backdrop-filter: blur(2px); }
.modal-content { background-color: #fefefe; margin: 15% auto; padding: 25px; border: none; width: 90%; max-width: 400px; border-radius: 8px; box-shadow: 0 10px 25px rgba(0,0,0,0.2); text-align: center; }
.modal-buttons { margin-top: 20px; display: flex; justify-content: center; gap: 10px; } 
.modal-buttons .btn { width: auto; min-width: 100px; }

.backup-area { border: 2px dashed #b0bec5; padding: 20px; border-radius: 8px; margin-top: 20px; background-color: #fafafa; }
.flex-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; flex-wrap: wrap; gap: 10px; }
.title-blue-bg { background-color: #0d47a1; color: white; padding: 5px 15px; display: inline-block; font-weight: bold; font-size: 1.2rem; }

.demo-area { border: 2px dashed var(--secondary-color); background-color: #fffde7; padding: 20px; border-radius: 8px; margin-top: 20px; }